/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Checks a function for 'blueprint thread safety'. Note this is not strict thread safety and does not perform any analysis on the function, it only inspects the metadata. Analysis is performed by the compiler for BP functions that are marked thread safe and metadata is used both here and in the compiler for native functions that have been validated for thread safe use in a blueprint.
static bool HasFunctionBlueprintThreadSafeMetaData ( const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * InFunction )